A sour stomach may be related to a number of acute conditions of the upper gastrointestinal tract. By far, acid reflux and non-functional dyspepsia are the most common causes for the range of symptoms known as a sour stomach. Or you could take antacids used for heartburn.( check with your local pharmacy).They'll make you feel better by neutralizing the acid in your stomach.but please keep in mind that they may cause constipation or diarrhea with overuse. Can Prozac cause Sour Stomach? Complete analysis from patient reviews and trusted online health resources, including first-hand experiences. prozac, zantac, zantac 75, panic disorder, nausea/vomiting, side effect, stomach Details: Will taking a Zantac 75 mg help with the nausea and upset stomach from Prozac side effects while adjusting?i just went up tp 15mg of prozac and got the nausea and morning sickness back. For the Consumer. Applies to paroxetine: oral capsule, oral suspension, oral tablet, oral tablet extended release. Along with its needed effects, paroxetine (the active ingredient contained in Paxil) may cause some unwanted effects. No sour stomach, no stomach problems, nothing coming up no pain either only symptom I have is this nasty feeling in my throat that something is stuck in there, I do have to clear my throat and I do have a mild cough on occasion but this feeling of something being stuck in my throat is the worse feeling ever. The content on the UpToDate website is not intended nor recommended as a substitute for medical advice, diagnosis, or treatment. Always seek the advice of your own physician or other qualified health care professional regarding any medical questions or conditions. Overview Prozac was the first of a new generation of antidepressants to come on the market. It works by enhancing the action of a brain chemical called Indigestion (dyspepsia, upset stomach) can be caused by problems related to, or not related to the gastrointestinal tract. Signs and symptoms are upper abdominal pain, belching, nausea, vomiting, abdominal bloating, and abdominal distention. Treatment depends upon the cause. 10 foods that are easy to digest People with acid reflux, stomach flu, irritable bowel, and other conditions may experience indigestion. Find out about the top 10 foods that are easy to digest and.